Gas control for oven burners of gas stoves



w. l. TWOMBLY GAS CONTROL FOR OVEN BURNERS 0F GAS STOVES Filed June 6, 1922 INVENTOR.

flu ATTORNEY.

Patented Apr. 13, 1926.

UNITED STATES PATENT OFFICE.

WILLARD I. TWOMBLY, OIE NEW YORK, N: Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE WILCOLATOR COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION' OF DELAWARE.

GAS CONTROL FOR OVEN BUBNERS OF GAS STOVES.

Application filed June 6,

To all whom it may concern:

Be it known that I, WILLARD I. TwoMBLY, a citizen of the United States, residing in the borough of Manhattan, city, county, and State otNew York, have invented certain new and useful Improvements in Gas Controls for Oven Burners of Gas Stoves, of which the following is a specification.

This invention relates to control mechanism designed for use in controlling the supply of a fuel to be consumed sotha-t a uniform temperature may be maintained. More specifically the invention is directed to the provision of a control mechanism ,especially adapted for use in connection with gas stoves to control the flow of gas to the burners therof.

Gas stoves are now commonly provided with thermostatic control devices of different types, which operate to control the flow of gas to the burners in accordance with the temperature in the oven chamber, so that by proper setting of the thermostatic device, an even temperature of any .selected value may be maintained in the oven chamber. Sometimes, however, it is, desirable to dis pense with the action of this thermostatic control, and the present invention involves the provision. of mechanism by which the burners may be supplied with gas to produce a predetermined temperature, this mechanism being arranged so that it may be cut oil to permit manual control of the gas flow when desired.

The present device may be employed in gas stoves already installed and in use, and it includes a casing which is connected to the usual manifold of the stove and which. has an inlet chamber into which gas is admitted from the manifold, and an outlet chamber from which gas flows to the burners. The casing also includes. a pair of chambers which are connected together outside the casing, through a thermostatic control device of any suitable form. Within the casing is a valve which is, so arranged that it may be placed in one position to cause a flow of gas fromthefinlet through the thermostatic device to the outlet, while in another position it ermits a direct flow of gas from the inlet. 0 amber to the outlet chamber of the casing. while shutting ofi the chambers serving as inlet and outlet re- 1922. Serial No. 566,426.

spectively of the thermostatic device, both from each other and from the gas inlet and outlet chambers. In a third position this valve operates to cut off the flow of gas from the inlet to the outlet. The device also includes apassage connected with a line which asses through the thermostatic control mec ianism, so'that when the latter is in operation gasmay be supplied to a pilot light.

In the accompanying drawings there is illustrated one embodiment of the invention which has been found to be satisfactory, and in these drawings,

Fig 1 isa view of the device in elevation,

Fig. 2 is a view partly in section,taken on.

the line 22 of Fig. 1, and showing the three-way valve in one osition,

Figs. 3 and 4 are sectional views taken on the line '22 of Fig. 1, showing the three .way valve in different positions of adjustment, 7

5 is a vertical view partly in section, sho ing the connection with the thermostatic control mechanism, and

"Fi 6 is a detail sectional view taken on "the line 66 of Fig. 1.

Similar reference characters designate corresponding parts in all of the Figures. A designates a casing one end a of which is adapted for connection with a suitable gas supply, as for example the usual manifold of a gas stove. The interior of the casing A is provided with a partition wall (1 extending transversely of the casing in which a valve or cook B works, an end wall a and with transverse walls a?, a, to form chambers or passages C; C C C In practice the casing A is a casting, and after the casting is formed it is tooled to form the chambers C 0 C, after which screw threaded plugs a are inserted to close the openings. The chamber G communicates with a passage D formed in,the casing A, and

this passage D is connected by a piped with, the inlet opening of a thermostatic control of any desired type, generally designated X, such for example as that disclosed in myapplication for patent filed May 1, 1922, Serial No. 557 ,669.-' The chamber (L is connected by a pipe d with the outlet opening of the thermostatic control X. 'The chamber C is connected by a pipe or other connection 0Z withthe burner orburners of'an oven;

The valve or cock B is-provided withla (Jut avvay' portion 6- and with:a passage-2b, and as will be noted from Figs. 2, 3 and 4, it has. three'positions. In Fig. 2 the cock is in such position'that the chambers G and C are in communicationas are the chambers C and C. In this position of the valve or cook B gas flows from the supply manifold of the 'gas stove into the chamber C, .through the valve. (cut-away portion b) into the chamber C From there it passes through the passage D, pipe d into the inlet opening of the thermostatic control, through the oulet of. the thermostatic control, through pipe 6Z1 into the chamber G From there is passes through the passage 6 into chamber C and from there through the connection (1 to the burner or burners generally designated Z; In Fig. 3 the-valve or cock B is in such position that the supply of gas is cut ,ofl from the ,chambers C, C and C and consequently no gas is supplied to the burners. In Fig. 4;-tl1e valve or cock B is in such position that gas from the chamber C flows directl to the chamber C andhence to the oven urner. In this position of the valve or cook B the thermostatic control is entirely cut oti'from the gas supply.

Referring to Fig. 6, when the valve or cock B is set in the position shown in Fig.

2, a pilot light for the oven burner is supplied through the connection p, the gas pass ing through said connection from the passage D. The amount of gas flowing is controlled by the needle valve p.

Having thus described my invention, what I claim as new is:

1. A control mechanism which comprises the combination of a casing having a chamber provided with a gas inlet adapted to be connected to a gas supply, a second chamber in the casin having a gas outlet adapted to be connected to a gas burner, a pair of chambers in the casing connected together through a connection outside the casing, and a valve within the casing movable to different positions of adjustment, the said valve being operative inone position to connect the inlet chamber to one of the pair of chainbers, and the outlet chamber to the other, in a second position operative to connect the 1nlet and outlet chambers together, while shutting ofirthe pair of chambers therefrom and 'fromzteachother, and, inaythird position having a passage formedthrough .it and having a portion cut.away,..this valve; being movable, to diiierent; positions of adjustment and operable in one position-to connectthe inlet chamber and one of the pair of chainbers through the cut-away-portion, and the outlet chamber and thesecondof the. pair of chambe ls through the passage, in a second position-v operable to connect the inlet and outlet chambers directly through-the'cirts away'portion while closing the pair of chambers from the inlet and=outletgchambers and from each other, andin a third position operable to connect the pair of chambers through the cut-away portion while shutting oi? the inlet and outlet chambers from each other and from the pair of chambers.

23. A control mechanism which comprises the combination of a casing having an inlet chamber adapted to be connected to a gas supply, an outlet chamber adapted to be connected to a gas burner, and a pair of chambers connected through a'thermostatic control mechanism a passage adapted to be connected to a pilotlight in the line leading through the thermostatic. control mechanism, and a valve in the casing movable to different positions of adjustment and in one position operative to connect the inlet chambers to one of the pair of chambers and the outlet chamber to the other, in a second position operative to connect the inlet and outlet chambers directly while shutting 03 the pair of chambers therefrom and from each-t, other, and in a third position operative to shut oii the inlet and outlet chambers from each other and from the pair of chambers while connecting the pair of chambers.

. WILLARD I. TWOMBLY. 

